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Unirse @raras aranci @erica DAVID H. LEVETT, OFPHILADELPHIA,PENNSYLVANIA.

MIXINGfNIACHlNE.

SPECIFICATION forming part of Letters Patent No. 296,338, dated April 8.1884.

Q Application filed July 23, 1883. (No model.)

To @ZZ whom t may concern:

Be it known vthat I, Davrn H. LEVETT, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new anduseful Improvement in MiXing-lliachines, whichimprovement is fully set forth in the following specication andaccompanying drawings, in which- Figure l is a side elevation, partlybroken away, of a mixing-machine embodying my invention. Fig. 2 is asection in line m x, Fig. l.

Similar letters of reference indicate corresponding parts in the twofigures.

My invention consists of a drum or cylinder, and beaters thereonrotating in reverse order, thus occasioning a movement of materials inopposite directions, and a thorough intermixture ofthe same, theconstruction of parts being hereinafter fully set forth and definitelyclaimed. y

It also consists of the construction of beaters of a mixingmachine,whereby they oper ate most effectively in causing an intermixture of thematerials, the latter being more particnlarly of a plastic nature, towhich, however, the invention is not limited.

Referring to the drawings, A represents a drum, cylinder, or receiverfor the materials to be mixed; B, the shaft thereof 5 B', the bearingsof the latter, and C the beaters, which are secured to the shaft. edloosely on the shaft B, and has secured to the outside of one of itsheads a bevel-pinion, D, which freely encircles said shaft and gears bymeans of an idler, E, with a bevel-pinion, F, which latter is rmlyconnected with said shaft B, the idler being properly mounted. Power isapplied to the shaft in any suitable manner, a cranlrwheel being shownin the present case, the rotation of the shaft being imparted to thebeaters, and, owing to the gearing D E F, also to the drum A, it beingseen that the movement of the beaters and drum is in reversed direction,by which provision the materials in the drum are subjected to thereverse actions of the beaters and drum, and thus forcibly7 agitated andthrown around in opposite directions, whereby they are thoroughlyintermingled and mixed. In order to increase the eectiveness of thebeaters, they are formed throughout their lengths at interlhe drum ismount.

vals with cross-bars c, and on their ends with heads b, which bars andheads may be integral Vwith the beater-arms or separate pieces attachedthereto. The cross-bars of each arm alternate with those of the adjacentarm, thus breaking joints between the adjacent crossbars, and formingsomewhat zigzag passages between the same, the effect whereof is todirect the materials to be mixed in numerous streams or currents, andchange the directions thereof, thus edectnally mixing the materials.This is assisted by the end heads,b,which throw the materials from theperiphery of the drum,

and in a measure act as Scrapers thereat, and.

secured in any suitable manner. The head A of the drum is divided, as atd, so as to be readily removed for access to the interior of the drum atthe end thereof. Vhen said divided or sectional head is fitted inposition on the end of the drum, it is securely held by means of boltse, which are fixed to the drum, and enter eyes f, iixed to the sectionsof the head, the ends of the bolts having fitted to them nuts g, whichmay be tightened, causing the head to be firmly clamped to the drum.When said nuts are loosened, the head may be withdrawn from the drum,the eyes j' and bolts e readily disengaging. This feature permits thehead of the drum to be displaced and restored without removing the drumor beaters from their shaft B, or thelatter from its bearin s.

gBy displacing the oraal; or power wheel or pulley, releasing the toppieces of the bearings B', loosening the fastening of the wheel F, andremoving the head of the drum, the shaft B and the beater may beconveniently and entirely withdrawn from the drum for the purpose ofrepairs, inspection, cc.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. A drum mounted on a reversely-rotating beatershaft, in combinationwith a bevelwheel rigidly connected with the head of said drum, andfreely encircling said shaft, a bevel- IOO Wheel rigidly connected withsaid shaft, and an intermediate idler, the two bevel-Wheels thus beingon the same shaft, substantially as and for the purpose set forth.

2. A drum mounted on areversely-rotating idler, both bevel-Wheels beingon the beater- I5 shaft, one fixed thereto, and the other loose thereon,and fixed to the head of the drum, substantially as and for the purposeset forth.

4. A mixing-machine having a drum mounted on a reversely-rotatingbeater-shaft, and 2o beaters formed with erossbars and end heads, thecross-bars alternating in adjacent beaters, substantially as and for thepurpose set forth.

D. H. LEVETT. W'itnesses:

JOHN A. WIEDERsHEiM, A. P. GRANT.

